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Journal articles
Thermal activation of rupture and slow crack growth in a model of homogenous brittle materials
Abstract : Slow crack growth in a model of homogenous brittle elastic material is described as a thermal activation process where stress fluctuations allow to overcome a breaking threshold through a series of irreversible steps. We study the case of a single crack in a flat sheet for which analytical predictions can be made, and compare them with results from the equivalent problem of a 2D spring network. Good statistical agreement is obtained for the crack growth profile and final rupture time. The specific scaling of the energy barrier with stress intensity factor appears as a consequence of irreversibility. In addition, the model brings out a characteristic growth length whose physical meaning could be tested experimentally.
Cited literature [1 references]
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00156844
Contributor : Loïc Vanel <>
Submitted on : Friday, June 22, 2007 - 6:29:12 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:06 PM
Document(s) archivé(s) le : Thursday, April 8, 2010 - 6:15:20 PM
Contributor : Loïc Vanel <>
Submitted on : Friday, June 22, 2007 - 6:29:12 PM
Last modification on : Wednesday, July 8, 2020 - 12:42:06 PM
Document(s) archivé(s) le : Thursday, April 8, 2010 - 6:15:20 PM
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